blob: 86dc76dcbf102e026f6f4852c7d22e9c255735e4 [file] [log] [blame]
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package whisk
import (
"fmt"
"os"
"runtime"
"strings"
)
type DebugLevel string
const (
DbgInfo DebugLevel = "Inf"
DbgWarn DebugLevel = "Wrn"
DbgError DebugLevel = "Err"
DbgFatal DebugLevel = "Ftl"
)
const MaxNameLen int = 25
var isVerbose bool
var isDebug bool
func init() {
if len(os.Getenv("WSK_CLI_DEBUG")) > 0 { // Useful for tracing init() code, before parms are parsed
SetDebug(true)
}
}
func SetDebug(b bool) {
isDebug = b
}
func SetVerbose(b bool) {
isVerbose = b
}
func IsVerbose() bool {
return isVerbose || isDebug
}
func IsDebug() bool {
return isDebug
}
/* Function for tracing debug level messages to stdout
Output format:
[file-or-function-name]:line-#:[DebugLevel] The formated message without any appended \n
*/
func Debug(dl DebugLevel, msgFormat string, args ...interface{}) {
if isDebug {
pc, file, line, _ := runtime.Caller(1)
fcn := runtime.FuncForPC(pc)
msg := fmt.Sprintf(msgFormat, args...)
fcnName := fcn.Name()
// Cobra command Run/RunE functions are anonymous, so the function name is unfriendly;
// use the file name instead
if strings.Contains(fcnName, "commands.glob.") || strings.Contains(fcnName, "whisk.glob.") {
fcnName = file
}
// Only interested in the the trailing function/file name characters
if len(fcnName) > MaxNameLen {
fcnName = fcnName[len(fcnName)-MaxNameLen:]
}
fmt.Printf("[%-25s]:%03d:[%3s] %v", fcnName, line, dl, msg)
}
}
/* Function for tracing debug level messages to stdout
Output format:
[file-or-function-name]:line-#:[DebugLevel] The formatted message without any appended newline characters
*/
func Verbose(msgFormat string, args ...interface{}) {
if IsVerbose() {
msg := fmt.Sprintf(msgFormat, args...)
fmt.Printf("%v", msg)
}
}